Timing chain tensioning rail components and removal/installation procedure for smart 451 engine 132.910 with torque specification.

Exploded view of cam chain tensioner assembly with numbered callouts and service steps for tensioning rail replacement.

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See all Powertrain figures for the Fortwo (450), or browse the full figure library. Part numbers and callouts are community-sourced and cross-referenced against the manuals — confirm with your VIN before ordering.